Exfo IQS-600 Integrated Qualification System Instrukcja Użytkownika Pobierz pdf (Strona 291)

Data Types

Integrated Qualification System 283

Applicable Data Types for Input—SCPI

SCPI data types include the IEEE 488.2 data types (see Applicable Data

Types for Input—IEEE 488.2 on page 264) with certain additional

restrictions.

 <numeric_value>: abbreviated form of the decimal numeric element.

It differs from the <DECIMAL NUMERIC PROGRAM DATA> “<NRf>”

described in IEEE 488.2.

Several forms of <CHARACTER PROGRAM DATA> are defined as

special forms of numbers. These are: MINimum, MAXimum, DEFault,

UP, DOWN, Not A Number (NAN), INFinity and Negative INFinity

(NINF). The following special forms are likely to be used by EXFO’s

instruments in certain commands or queries:

 DEFault: This special <numeric_value> parameter forces the

instrument to select a value, which is deemed to be convenient to

the user.

 MINimum|MAXimum: These special <numeric_value>

parameters refer to the instrument’s limit values. MINimum

corresponds to the value closest to negative infinity that the

function can accept. MAXimum corresponds to the largest value

that the function can accept.

 <Boolean Program Data>: This form is often used as a shorthand

of the <DECIMAL NUMERIC PROGRAM DATA>ON|OFF form.

<Boolean Program Data> parameters have a value of 0 or 1 and

are not followed by any unit.

On input, an <NRf> is rounded to an integer.

A non-zero result is interpreted as 1.

ON and OFF are accepted on input for readability purposes. They

correspond respectively to 1 and 0. However, on output, they

appear as 1 or 0, never ON or OFF.

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Exfo IQS-600 Integrated Qualification System Instrukcja Użytkownika Strona 291